Fig. 6
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Observed RMS vφ of stars in M 67 as a function of distance r from the cluster center (in blue and black) till 1rJ. Gray shaded region shows the 3σ uncertainty bounds. Red dotted line is the best-fitting Plummer model profile, obtained using a core radius of 2.6 pc, fitted to the observed RMS vφ. Similar plot for NGC 2281 in Fig. A.6.
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